/*
 * Copyright 2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.dopdf.document.hash.strategy;

/**
 * The identifier generator interface.  Users can provide their own implementation to generate identifiers agains which
 * the pdf document will be indexed.
 *
 * @author Deep Shah
 */
public interface IdentifierGenerator {

    /**
     * This method should generate unique ids.
     * @return the String value representing the unique identifier generated.
     */
    String generateUniqueId();
}
